NEW YORK — In July 11, 2018 commentary published in the Washington Examiner, AAR President and CEO Ed Hamberger teamed with American Chemistry Council President and CEO Cal Dooley and American Petroleum Institute President and CEO Jack Gerard to point out the inherent folly of President Donald Trump’s planned imposition of tariffs on steel and aluminum, which would almost certainly cause a simmering trade war with vital economic partners to boil out of control, killing jobs and flushing U.S. economic security into the sewer.